I bought a ata airborne. Fantastic gun, looked and felt nice, apart from I couldn't shoot it as the seals went before I could. 3 times from new. Got my money back.
Years ago, ags pcr-1. Very budget at the time PCP, worked for the session, but as soon as you touched the barrel or left it stand it lost pressure and zero. Couldnt pump it up from a stirrup either from empty, had to be a bottle, which I didn't have being skint and living in the sticks at the time.
I believe these new guns (most of Turkish descent) will be fine, but I don't think for a moment they will still be 'tight' in 20 years time like older quality makes, just look at rapids, falcons, super 10s and s410s, still going strong. I always wanted a shiny new gun, but I've learned to buy quality secondhand instead, which is a shame as nothing progresses with out selling new designs off if you catch my meaning
Super soaker 3000 (water), nerf fang (foam), noisy cricket (energy), m41a pulse rifle (10x24), Gat gun (.177)